| // Copyright (C) 2009 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.gerrit.httpd; |
| |
| import com.google.gerrit.lifecycle.LifecycleListener; |
| import com.google.inject.Provider; |
| import com.google.inject.ProvisionException; |
| import com.google.inject.Singleton; |
| |
| import javax.naming.InitialContext; |
| import javax.naming.NamingException; |
| import javax.sql.DataSource; |
| |
| /** Provides access to the {@code ReviewDb} DataSource. */ |
| @Singleton |
| final class ReviewDbDataSourceProvider implements Provider<DataSource>, |
| LifecycleListener { |
| private DataSource ds; |
| |
| @Override |
| public synchronized DataSource get() { |
| if (ds == null) { |
| ds = open(); |
| } |
| return ds; |
| } |
| |
| @Override |
| public void start() { |
| } |
| |
| @Override |
| public synchronized void stop() { |
| if (ds != null) { |
| closeDataSource(ds); |
| } |
| } |
| |
| private DataSource open() { |
| final String dsName = "java:comp/env/jdbc/ReviewDb"; |
| try { |
| return (DataSource) new InitialContext().lookup(dsName); |
| } catch (NamingException namingErr) { |
| throw new ProvisionException("No DataSource " + dsName, namingErr); |
| } |
| } |
| |
| private void closeDataSource(final DataSource ds) { |
| try { |
| Class<?> type = Class.forName("org.apache.commons.dbcp.BasicDataSource"); |
| if (type.isInstance(ds)) { |
| type.getMethod("close").invoke(ds); |
| return; |
| } |
| } catch (Throwable bad) { |
| // Oh well, its not a Commons DBCP pooled connection. |
| } |
| |
| try { |
| Class<?> type = Class.forName("com.mchange.v2.c3p0.DataSources"); |
| if (type.isInstance(ds)) { |
| type.getMethod("destroy", DataSource.class).invoke(null, ds); |
| return; |
| } |
| } catch (Throwable bad) { |
| // Oh well, its not a c3p0 pooled connection. |
| } |
| } |
| } |